/*
 * Copyright (C) 2015 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.collect;

import com.google.common.annotations.GwtIncompatible;
import java.util.function.BinaryOperator;
import java.util.function.Function;
import java.util.stream.Collector;

/**
 * "Overrides" the {@link ImmutableMap} static methods that lack {@link ImmutableBiMap} equivalents
 * with deprecated, exception-throwing versions. See {@link ImmutableSortedSetFauxverideShim} for
 * details.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible
abstract class ImmutableBiMapFauxverideShim<K, V> extends ImmutableMap<K, V> {
    /**
     * Not supported. Use {@link ImmutableBiMap#toImmutableBiMap} instead. This method exists only
     * to hide {@link ImmutableMap#toImmutableMap(Function, Function)} from consumers of {@code
     * ImmutableBiMap}.
     *
     * @throws UnsupportedOperationException always
     * @deprecated Use {@link ImmutableBiMap#toImmutableBiMap}.
     */
    @Deprecated
    public static <T, K, V> Collector<T, ?, ImmutableMap<K, V>> toImmutableMap(
            Function<? super T, ? extends K> keyFunction, Function<? super T, ? extends V> valueFunction) {
        throw new UnsupportedOperationException();
    }

    /**
     * Not supported. This method does not make sense for {@code BiMap}. This method exists only to
     * hide {@link ImmutableMap#toImmutableMap(Function, Function, BinaryOperator)} from consumers
     * of {@code ImmutableBiMap}.
     *
     * @throws UnsupportedOperationException always
     * @deprecated
     */
    @Deprecated
    public static <T, K, V> Collector<T, ?, ImmutableMap<K, V>> toImmutableMap(
            Function<? super T, ? extends K> keyFunction, Function<? super T, ? extends V> valueFunction,
            BinaryOperator<V> mergeFunction) {
        throw new UnsupportedOperationException();
    }
}
